Wso2esb sap-jkh-v2.0

Retail sector example for Using the WSO2 ESB with SAP ERPNalaka Umagiliya – Head of Business Systems (Retail Sector), John Keells Holdings PLCHarsha Senanayake - Head of Enterprise Solutions, John Keells Holding PLCSumedha Rubasinghe – Architect, Chair-Management Committee Data Technologies, WSO2Asanka Abeysinghe - Director, Solutions Architecture, WSO2 © WSO2 2012. Not for redistribution. Commercial in Confidence.

WSO2 Background-  Founded in 2005 by recognized leaders in XML, Web services technologies, standards and open source-  Primary contributors to Apache Web Services projects started in 2001-  Funded by Intel Capital & Quest Software ($11M)-  Technology OEM’d by IBM, Progress, Software AG, Alcatel, EMC, and CA-  Global offices: -  Palo Alto, USA - Portsmouth, UK - Sydney, Australia - Colombo, Sri Lanka-  145+ employees and growing

WSO2 Platforms and PaaSWSO2 Carbon WSO2 Stratos WSO2 StratosLiveEnterprise Middleware Cloud Middleware Platform Java PaaSPlatformOn-premise on physical or Cloud-native (multi-tenant & Public Java PaaS operated byvirtualized environments metered), deployed as private WSO2 or public PaaSFull suite of products – start with Full benefits of cloud – from Instant access to middleware –one, click to add more using VMs to building higher as-a-Service level PaaS or SaaS appsIn production at 100+ F1000 Manage central ops, enable Pay just for what you use;enterprises; 1B txn per day at developers to self-provision flexible billingeBay middleware services Common Code Base •  Complete middleware stack •  OSGi-based componentized platform •  100% open source and standards

WSO2 support engagement model-  QuickStart-  Development Support-  Development Services-  Production Support-  Turnkey Solutions

John Keells Group-  Founded in 1870; A proud history spanning 140 years-  Sri Lanka’s highest market capitalized company - Exceeds USD 1.6 billion-  Group’s 9 listed companies contributes to 15 % of Colombo Stock Exchange market cap-  Group Revenue – Rs.60.5 billion in 2010-11-  10,000+ Employees-  Present in key sectors of Sri Lankan economy (Transportation, Property, Leisure, Consumer Foods & Retail, Information Technology & BPO, Financial Services & Plantation Services)-  A Full Member of the World Economic Forum-  First Sri Lankan company to be listed overseas – GDRs listed on the Luxembourg Stock Exchange with a AAA+ credit rating-  Ranked among the “200 Best under a Billion” in Asia Pacific by Forbes-  LMDs Most Respected Entity in Sri Lanka – Placed first in four out of five years, since inception-  Signatory to the UN Global Compact

BU - KeellsSuper-  Keells Super is one of the leading supermarket chains in the country which has been in operation for the last 20 years-  Keells Super was Instrumental in popularizing Modern trade in Sri Lanka-  Currently at 42 outlets and expanding The First and only online supermarket in Sri Lanka -‐ First Retailer to KeellsSuper.com implement a leading ERP in Sri Lanka – 2004/5 Introduced the ﬁrst Loyalty program in Retail with Integrated CRM and BI in Sri Lanka Real-‐Jme stock taking using handheld scanners (Recognized as a case study by Motorola) Introduced the ﬁrst Retail Radio in Sri Lanka (Keells Super Radio)

Business Requirement-  Streamline the SAP and POS integration - Eliminate the performance issues and failures faced with the current SAP and POS integration-  Seamless integration with the online store – keellssuper.com .com

Business Requirements Required Integration scenarios Direction Description Arti cl e masters -‐ new a nd c hanges Condi ti on masters -‐ pri ce c hanges Vendor masters -‐ new a nd c hanges Customer master (credi t c ustomers) Outbound Bonus Buy Condi ti ons / Promoti ons (Head offi ce -‐> Downl oad phys. i nv. docs, upl oad phys. i nv. c ount data POS) Credi t l i mi ts Stock bal ances Gi ft vouchers master data Appl i cati on a cknowl edgements Fi nanci al transcati ons Inbound Upl oad day-‐end c l osi ng POS (POS -‐ > Head Upl oad s al es data (compressed) offi ce) Inventory c ounts Gi ft vouchers -‐ i ssues

Technical Requirements-  Guaranteed delivery - message queuing and guaranteed delivery semantics -  Unreliable and slow networks (specially in outstations), POS Server outages-  Minimize changes to existing infrastructure – POS-  Quality of service (QOS) requirements -  Exactly Once In Order – E.g. Price changes -  Exactly Once – E.g. Sales data-  Better performance without impacting the ERP system -  Avoid using synchronous BAPIs/RFC and adopt IDOC based integration which is used by almost all SAP ERP Retail customers -  Message throttling-  Prioritization of Messages -  Price changes Vs Article description change-  Light weight, simple and easily maintainable integration middleware

Component Architecture :

Solution Architecture

Message flow and Enterprise Integration Patterns used (2) Transform/Map to IDOC structure - WPUUMS01 has limit on max line items per IDOC therefore will need to be split into multiple IDOCs ç (1) Query Sales line-items by Polling •  Update on message successfully accepted by the ESB - (Update TRANFFERED_TO_ESB =“TRUE”) Message translator Polling Consumer Spilter (XSLT)SAP ç (3) Post IDOC ‘WPUUMS01’ ESB POSReceiver Sender è (4) Technical ack - è (5) Update on Technical ack - UPDATE record : SQL IDOC created successfully /failed •  TRANFFERED_TO_SAP_TEC_ACK=“TRUE” messages if reprocessed in SAP. Content-Based Router Store and Forward è (6) Application ack - (ALEAUD) è (7) Update on Application ack - UPDATE record: (status, message) – Multiple ALEAUD •  ALEAUD message status and update field messages if reprocessed in SAP. TRANSFFERED_SAP _APPLICATION_ACK = “TRUE” and update field TRANSFFERED Content-Based Router Notations from the book Enterprise Integration Patterns - Gregor Hohpe

Deployment architecture - Sizing -  500k transactions on an Direction Message Type # of IDOCs on May 2 011 ALEAUD 4 ,569 average month ARTMAS 7 5,189 -  1 million on seasonal COND_A 3 25,517 CREMAS 2 14 months Outbound DEBMAS 1 9 (Head offi ce -‐> -  Avg Size of a message - POS) WPDBBY WVINVE 6 46 4 ,110 100kb – 5mb ZFI_CRED 3 01 ZMM_STOCK 1 1,592 ZSDGV 4 91 WPUFIB 5 ,058 Inbound WPUTAB 1 ,339 (POS -‐ > Head WPUUMS 8 ,565 offi ce) WVINVE 3 3,866 ZSDGVRE 4 ,140

Deployment architecture Production Server Configuration DR Server 1:-CPU:- 4 Cores RAM:- 8 GB Storage :- 50 GB Server 2: CPU:- 2 Cores RAM:- 4 GB Storage :- 140 GB Development Server Configuration CPU:- 4 Cores RAM:- 8 GB Storage :- 105 GB

Project Challenges & Lessons learnt-  What worked in the Lab with sophisticated load test tools can break in the real environment -  When you have multiple components (SAP ERP, POS, 50+ end points over unreliable networks) it’s difficult to simulate a real production environment-  Strike a balance between offshore and onsite model-  Have frequent project / steering committee meeting to ensure EVERYONE is on the same page to avoid surprises

Results-  Scalability-  Lower TCO-  Peace of mind

Summary-  Bus architecture to connect 40+ POS endpoints-  Transform and throttle messages based on SAP specification-  Cater for higher load-  Pull model to minimize the infrastructure changes-  Map EIPs to handle message flows and QoS-  Convert SQL data into SAP iDOCsFuture Project Enhancements ?

More Info§  Corporate website: http://wso2.com§  Developer portal: http://wso2.org§  Business development team: bizdev@wso2.com§  John Keells SAP and WSO2 Professional services §  Website : http://www.sgit.keells.com §  Business development team : info.sgit@keells.com

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Wso2esb sap-jkh-v2.0

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